Cisco Nexus 9000 Series Configuration Manual page 122
Nx-os vxlan
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Also See for Nexus 9000 Series:
- Configuration manual (562 pages) ,
- Troubleshooting manual (126 pages) ,
- Quick start configuration manual (6 pages)
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Enabling Layer 2 Gateway STP on a Switch
MST0000
Spanning tree enabled protocol mstp
Root ID
Bridge ID
Interface
---------------- ---- --- --------- -------- --------------------------------
Po1
Po2
Po3
Po12
Po13
Eth1/1
To disable Layer 2 Gateway STP on a VTEP, enter the spanning-tree domain disable CLI command. This
command disables Layer 2 Gateway STP on all EVPN ESI multihomed VLANs. The bridge MAC address
is restored to the system MAC address, and the VTEP may not necessarily be the root. In the following case,
the access switch has assumed the root role because Layer 2 Gateway STP is disabled:
switch(config)# spanning-tree domain disable
switch# show spanning-tree summary
Switch is in mst mode (IEEE Standard)
Root bridge for: none
L2 Gateway STP
Port Type Default
Edge Port [PortFast] BPDU Guard Default
Edge Port [PortFast] BPDU Filter Default is disabled
Bridge Assurance
Loopguard Default
Pathcost method used
PVST Simulation
STP-Lite
Name
---------------------- -------- --------- -------- ---------- ----------
MST0000
---------------------- -------- --------- -------- ---------- ----------
1 mst
switch# show spanning-tree vlan 1001
MST0000
Spanning tree enabled protocol mstp
Root ID
Bridge ID
With Layer 2 Gateway STP, the access ports on VTEPs cannot be in an edge port, because they behave like
normal spanning-tree ports, receiving BPDUs from the access switches. In that case, the access ports on
VTEPs lose the advantage of rapid transmission, instead forwarding on Ethernet segment link flap. (They
have to go through a proposal and agreement handshake before assuming the FWD-Desg role).
Cisco Nexus 9000 Series NX-OS VXLAN Configuration Guide, Release 7.x
110
Priority
8192
Address
c84c.75fa.6001
This bridge is the root
Hello Time
2
sec
Max Age 20 sec
Priority
8192
(priority 8192 sys-id-ext 0)
Address
c84c.75fa.6001
Hello Time
2
sec
Max Age 20 sec
Role Sts Cost
Prio.Nbr Type
Desg FWD 20000
128.4096 Edge P2p
Desg FWD 20000
128.4097 Edge P2p
Desg FWD 20000
128.4098 Edge P2p
Desg BKN*2000
128.4107 P2p *L2GW_Inc
Desg BKN*1000
128.4108 P2p *L2GW_Inc
Desg BKN*2000
128.1
Blocking Listening Learning Forwarding STP Active
4
4
Priority
4096
Address
00c8.8ba6.5073
Cost
0
Port
4108 (port-channel13)
Hello Time
2
sec
Max Age 20 sec
Priority
8192
(priority 8192 sys-id-ext 0)
Address
5897.bd1d.db95
Hello Time
2
sec
Max Age 20 sec
Configuring VXLAN EVPN Multihoming
Forward Delay 15 sec
Forward Delay 15 sec
P2p *L2GW_Inc
is disabled
is disable
is disabled
is enabled
is disabled
is long
is enabled
is disabled
0
0
8
0
0
8
Forward Delay 15 sec
Forward Delay 15 sec
12
12
- Quick Links:
- Configuring Vxlan
- Configuring Q-In-Vni
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